Home / 138,647.26-191,333.22-74,985.04

Finding the Fourth Proportional to 138,647.26, 191,333.22 and 74,985.04

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Solution

The fourth proportional to 138,647.26, 191,333.22 and 74,985.04 is: 103,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,647.26 : 191,333.22 = 74,985.04 : x
  2. Step 2: Convert to fraction form
    138,647.26/191,333.22 = 74,985.04/x
  3. Step 3: Cross multiply
    138,647.26x = 191,333.22 × 74,985.04
  4. Step 4: Simplify right side
    138,647.26x = 14,347,128,198.36
  5. Step 5: Solve for x
    x = 14,347,128,198.36/138,647.26
  6. Step 6: Final answer
    x = 103,479.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.